The 27-year-old British singer's appearances in Spain, Switzerland, Italy, Austria, Poland, Hungary and Romania have now also been scrapped. The tour had been due to end in Bucharest on Aug. 15.

Winehouse's music has been overshadowed by drug use, legal run-ins and a tempestuous marriage that ended in divorce. In 2008, she spent two weeks in a rehab clinic after the British tabloid, The Sun, released grainy footage showing Winehouse inhaling fumes from a pipe.